Symptom: Component Won't Start

Possible Cause: Component not required per control sequence.
Corrective Action: Refer to control sequence applicable to your unit (available here). Verify conditions allow component to operate (for instance, compressor not locked out on low temperature) and the unit should be calling for the component (for example, space set point is lower than space temperature for cooling call).
Possible Cause: Component enable is not set to Auto.
Corrective Action: Component must be set to AUTO in system enables; see Controller/System Menu.
Possible Cause: Component is in-hand and turned off.
Corrective Action: Check manual control; see Controller/Technician Menu.
Possible Cause: Issue with component.
Corrective Action: If controller is calling for component, troubleshoot control circuit and component.